Featured: Energize

Making smart grids smart, makes smart cities smarter

Today’s energy challenges are causing modern cities to curtail their dependence on traditional energy sources and adopt smart grid technology. Smart grid is the effective digitisation of field assets and respective communication of an electrical grid and water infrastructure into a central digital management system that manages grid control systems such as Protection devices with […]

Evolving 4IR technologies and digital substations

The world of electrical energy provision is transforming at a rapid pace. The convention of centralised generation, transmission and distribution is fast changing with the ever-increasing adoption of renewable generation technologies, battery energy storage and new electric applications, such as electric transport. Until now the generation of electrical power has been managed to meet the […]

Energy storage on municipal grids: Why this makes sense

Any cost-conscious electricity consumer will always be on the lookout for ways to optimise their energy use and reduce the money paid for the service. Driven by tariff structure design, the real costs have always been, and remain dependent on the profile of the load. The more “peaky” the load, the more it costs to […]

Challenges of planning future high voltage power system networks

Steady growth and development in South Africa have led to increased demand for electricity and hence the expansion of electric power networks and an evolution to the current power system network. To date, there have been several planning challenges, both technical and non-technical, many of which still persist. It is predicted that there is a […]

Early detection of impending failure in HV cable terminations

In a case study municipal substation, there has been prevalent failures of 88 kV cable terminations after 29 years in operation. All failed terminations were forensically investigated and the failure mechanisms within the cable termination were identified. Furthermore, an online data logging system had been installed in order to record the terminations operating parameters. In […]

Public lighting: Lighting the way to smart city development

Public lighting is one of the services most visually seen by the general public within a city (though it almost goes unnoticed). Lighting provides a sense of visual safety and security. This improved sense of safety and security will often lead to an increase and further promotion of community activities, events, sport, trade, industry and […]

Anticipating silicon solar cells with significantly improved efficiency

Theoretical calculations indicate that under certain conditions silicon can endow solar cells with a much higher efficiency. Small silicon clusters may provide a source of accordingly modified silicon. However, to date these clusters have not been accessible in soluble form, a prerequisite for flexible processing. Researchers at the Technical University of Munich have now discovered […]

The importance of gas as an energy source

South Africans seem to be convinced that the best form of energy is electricity. But this is not always true. Natural gas is a clean-burning source of energy which is ideal for many industrial processes. In the latest iteration of the country’s energy plan, the Integrated Resource Plan (IRP2019), gas is predicted to provide 8% […]

Explosive letter sent to Parliament’s energy oversight committee by Necsa board

An explosive letter, dated 17 October 2019, from the current Nuclear Energy Corporation of South Africa (Necsa) board to the Parliamentary Portfolio Committee on Minerals and Energy, reveals startling new information relating to the misuse of Necsa’s funds by the former board under fired former chairman Kelvin Kemm and former CEO Phumzile Tshelane. The letter […]